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(No Model. O. W. POTTER.

WATER PUMP ATTACHMENT FOR AIR GOMPRESSORS.

No. 287.325. PatentedOct. 23, 1883.

M ZZ blhngmpher, Washington D a jqz - v UNITED STATES PATENT OFFIC CHARLES WV. POTTER, OF NEW YORK, N. Y., ASSIGNOR TO THE SEBGEANT & CULLINGWORTH COMPANY, OF SAME PLACE.

WATER-PUMP ATTACHMENT FOR Al'R-COMPRES-SORS.

SPECIFICATION forming part of Letters Patent No. 287,325, dated October 23, 1883.

Application filed March 8, ma. (No model.) I

To all whom it may concern :1

Be it known that I, CHARLES W. POTTER,

- of the city of New York, in the county and State of New York, have invented a new and 5 useful Improvement in WVater-Pump Attachments for Air-Con1pressors, of which the following is a specification.

My invention relates to the means employed a reciprocating movement much shorter than.

the movement of the cross-head or part which operates the connecting devices.

In the accompanying drawings, Figure l i a side view of a portion of an air-compressor and apump embodying my invention, and Fig. 2 is a plan thereof.

Similae letters of reference designate corresponding parts in both figures.

A designates the compressioncylinder, and B the end portion of the bed to which it is secured.

O designates the pistoirrod, and D the crosshead, which is adapted to work in suitable guides, D. The piston may have a recipro eating motion imparted to it by a crank or cranks on a shaft to which power is trans mitted by belt or gearing; or a steam-cylinder may be employed for the purpose, and the piston-rod 0 may be extended so as to form the piston-rod of the engine.

E designates the pump for cooling-water, hereshown as arranged at the side of and secured directly to the compression-cylinder A. The pump takes water through the suctionpipe a, and the cylinder A has formed in it passages 2), (shown in dotted lines,) through which water is discharged by the pump into the said cylinder.

F designates a lever fulcrumed at c on one side of thepiston-rod G, and, as here shown, to one of the guides D. This lever is connected with the piston-rod of the pump E by a rod, G, and it extends across above the cross-head D and to the opposite side of the piston-rod, where it is connected by a pin or stud, d, with the said cross-head. In the lever F is a slot, (1, which receives the pin or stud d through it. As the piston-rod and cross-head are reciprocated, the lever F is vibrated back and forth in an approximately horizontal plane, and imparts a reciprocating movement to the piston of the pump through the rod G. The rod G is connected to the lever F between its fulcrum c and the piston-rod O, and owing to the relative distances of the rod G and the pin or stud d from the fulcrum c of the lever F, the stroke of the pump-piston is very much shorter than the reciprocating movement of the cross-head.

The length of the lever F may be such that it will not project beyond the inner sides of the guides D, and it is therefore arranged below the tops and between the said guides. It may, however, be arranged below the crosshead, if desired, in which case the pump would'be lowered, or, instead of receiving its motion from the cross-head, the lever may be connected with an arm projecting from the piston-rod, or with any other reciprocating part of the compressor.

By the arrangement and combination of devices here shown I enable a movement of the desired length to be imparted to the pump piston or plunger in a very simple and desirable manner.

I do not claim, broadly, as of my invention, the combination, with a reciprocating crosshead, of a lever fulcru'med at one end, and having its other end connected with said crosshead, and a pump-operating rod connected with said-lever; but

WVhat I claim as my invention, and desire to secure, by Letters Patent, is-

1. The combination, with an air-compressor and a pump for supplying cooling-water there to, of a lever adapted to swing in a horizontal plane, fulcrumed at one side of the pistonrod of the compressor to one of the cross-head guides, andconnected on the opposite side of the piston-rod with the cross-head or other reciprocating part of the compressor, and a rod for workingthe pump connected to said lever between its fulcrum and the said pistonrod, substantially as and for the purpose described.

2. The combination, with the compressioncyiinder A, piston-rod G, cross-head D, and guides D, of the puinp E, the lever F, arranged below the tops of and between said guides, fulcrumed on one side of said piston-rod, and

Vitnesses:

FREDK. HAYNES, E1). L. MORAN. 

